TVS-873e AMD RX-421BD 2.1~3.4 GHz, 4GB DDR4 RAM, 8x 2.5"/3.5" + 2x M.2 2280/2260 SATA 6Gb/s drives 4x Gbe LAN, optional 10GbE Pie expansion, Surveillance Station free 4 & max 72 channels, USB 3.1 10Gbps, USB Quick Access NAS and iSCSI-SAN (IP-SAN) unified storage solution ; Integrated Radeon R7 GPU for 4K video storage and playback 10GbE-expandable, highly-efficient storage solution for virtualization and HD video editing & sharing ; USB Quick Access port for accessing files without needing a network connection M.2 SSD cache and Tier technology jointly realize optimized storage efficiency ; Supports virtualization, centralized storage, backup, sharing, and disaster recovery Overview: A powerful business NAS with an AMD RX-421BD quad-core APU, up to 64GB DDR4 RAM, and supports dual PCIe slots, USB QuickAccess and HDMI 4K output. model : ADATA XPG SX6000 Lite 512GB PCIe 3D NAND PCIe Internal Solid State Drive tag : NAS